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Keywords:

  • atropoisomerism;
  • electronic structure;
  • helical structures;
  • liquid crystals;
  • polycycles
Thumbnail image of graphical abstract

Atropoisomeric aromatic cores enhance disorder inside the supramolecular packing of disk-shaped mesogens. Core-extension of perylene with an atropoisomeric [4]helicene fragment thus gives rise to a room-temperature liquid crystal even with extremely short side chains. Replacement of diester moieties by imide substituents allows switching from donor- to acceptor-type electronic characteristics.